True, but my point is that Evolution by Natural Selection in reality doesn't change anything, since God existed before our universe and its very laws. Dawkin's argument shouldn't be counted as an argument.

If God designed our world, and living beings evolve in certain ways depending on the world around them(what we call natural selection), in reality those beings evolve according to God's design, since the world around them was designed by God. If scientific investigation proves that living beings evolved by natural selection it doesn't change the probability of his existence, it merely demonstrates in what way God created them.

Dawkin's argument is only applicable if we suppose that God himself is a part of his own creation.